|Publication number||US7720589 B2|
|Application number||US 11/295,983|
|Publication date||May 18, 2010|
|Filing date||Dec 8, 2005|
|Priority date||Dec 13, 2004|
|Also published as||CN1789050A, CN1789050B, DE102005058234A1, DE102005058234B4, US20060125314|
|Publication number||11295983, 295983, US 7720589 B2, US 7720589B2, US-B2-7720589, US7720589 B2, US7720589B2|
|Original Assignee||Advics Co., Ltd.|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (30), Non-Patent Citations (1), Referenced by (4), Classifications (22), Legal Events (2)|
|External Links: USPTO, USPTO Assignment, Espacenet|
The present invention relates to a vehicle control device mounted in a vehicle brake hydraulic pressure control system such as an anti-lock brake system (ABS), a traction control system (TRC) or an electronic stability control system (ESC).
This type of vehicle control device is shown in
The electronic control unit 2 includes a control substrate 21 mounted in a resin casing 20 for controlling the hydraulic pressure control valves 5 and 6. The hydraulic pressure control valves 5 and 6, motor M and other units are electrically connected to the control substrate 21. The control substrate 21 controls these units based on signals from various sensors such as wheel speed sensors (as disclosed in JP patent publications 8-11691 and 2001-260846 (both unexamined)). Various electronic control parts 23 are mounted on the control substrate 21. A power source/control connector 24 is mounted on the outer surface of the casing 20.
Normally, the control valves 5 for pressure increase are kept open while the control valves 6 for pressure reduction are kept closed. Thus, when the brake pedal is depressed in this state, hydraulic pressure is supplied from the master cylinder into the passages 9 a through the master cylinder ports 7, and then into respective wheel cylinders through the control valves 5 for pressure increase and the wheel cylinder ports 8. The brakes are thus applied to the respective wheels.
If such a vehicle control device is mounted in a vehicle brake hydraulic pressure control system such as ABS, TRC or ESC, the control substrate 21 controls the hydraulic control valves 5 and 6 based on signals from various vehicle behavioral sensors, which are mounted on the control substrate 21, thereby controlling the respective wheel cylinder pressures during e.g. electronic stability control.
With increasing demands for more luxurious and safer motor vehicles, an increasing number of today's automobiles are equipped with driving dynamics sensors, which are a type of vehicle behavioral sensors, to detect the movement of the vehicle in every direction, thereby optimally controlling the brake hydraulic pressure based on the signals from these sensors so that the vehicle can travel more smoothly and safely.
Such driving dynamics sensors are ordinarily mounted at the center of gravity of the vehicle. However, the center of gravity of the vehicle is typically not located in the engine room, in which the vehicle control device is mounted. Thus, it is usually necessary to connect them together through a wire harness.
The use of a wire harness and connectors pushes up the cost of the device, and necessitates measures for fixing it to the vehicle body, which further pushes up the cost of the device. Also, a dedicated sensor bracket is necessary for fixing to the vehicle body. To solve this problem, JP patent publication 2004-506572 proposes to mount the driving dynamics sensors in the electronic control unit 2 of the vehicle control device.
In particular, this publication proposes to mount vehicle behavioral sensors such as driving dynamics sensors S in a bulge 20 a (shown by chain line in
The bulge 20 a increases the dimension of the vehicle control device in the horizontal direction of
An object of the present invention is to provide a compact vehicle control device carrying vehicle behavioral sensors such as driving dynamics sensors in the electronic control unit.
In order to control today's sophisticated vehicle hydraulic pressure control systems such as ABS, TRC and ESC, it is necessary to mount a large number of electronic parts 23 on the control substrate 21. This necessitates a larger control substrate 21 and thus a larger casing 20 for the electronic control unit 2. The casing 20 thus typically protrudes laterally from the housing 10 of the hydraulic unit 1, as shown in
As used herein, “vehicle behavioral sensors” include all kinds of sensors that can detect any behavior of the vehicle resulting from the control of brake hydraulic pressure, such sensors including driving dynamics sensors such as acceleration sensors for detecting acceleration in the travel direction of the vehicle and in the direction perpendicular to the travel direction of the vehicle, yaw rate sensors, roll rate sensors and pitch rate sensors.
According to the present invention, such vehicle behavioral sensors S are mounted in a space where the connectors 24 are mounted in the conventional device of
As shown in
Specifically, according to the present invention, there is provided a vehicle control device comprising a hydraulic unit comprising a housing and hydraulic pressure control valves mounted in the housing, an electronic control unit for controlling the hydraulic pressure control valves, the electronic control unit including a casing having a mounting surface on which the hydraulic unit is mounted so as not to protrude from the mounting surface, the mounting surface having a protruding area protruding from the hydraulic unit, a connector for the electronic control unit mounted on the protruding area, the protruding area being formed with a bulge, and a vehicle behavioral sensor mounted in the bulge.
The bulge may be provided on any portion of the protruding area. For example, the bulge may be formed on a portion of the protruding area where the connector is not mounted. Otherwise, the bulge may be provided between the connector and the control substrate mounted in the electronic control unit for controlling the hydraulic pressure control valves. In the latter case, the device has substantially the same contour as a conventional vehicle control device having no vehicle behavioral sensors. Thus, it takes up less mounting space.
Preferably, the bulge is provided vertically downward from the connector.
Typically, the center of gravity and the axis of rolling of a vehicle are located at a lower portion of the vehicle, while the vehicle behavioral sensor is located vertically upwardly of them. The nearer such vehicle behavioral sensor is located to the center of gravity and the center of rolling of the vehicle, the higher its accuracy. Thus, by providing the bulge vertically downward from the connector for the electronic control unit, the vehicle behavioral sensor, which is mounted in the bulge, can be located nearer to the center of gravity and the axis of rolling, so that its accuracy is higher, than when the sensor is provided vertically upward from the connector.
The sensor may be mounted on a small substrate supported on the control substrate.
Preferably, the small substrate has a first side edge thereof connected to the control substrate so as to extend transverse to the control substrate and to be inclinable relative to the control substrate, and has a second opposed side edge thereof fixed to an inner surface of the bulge. With this arrangement, with the small substrate positioned such that the vehicle behavior sensor is oriented in the right direction with respect to the travel direction, lateral direction and vertical direction of the vehicle (when the vehicle is on a horizontal surface), the small substrate is fixed in position.
The second side edge of the small substrate may be fixed to the inner surface of the bulge through a spherical bearing with the small substrate inclined at a predetermined angle relative to the control substrate. With this arrangement, the angle of the small substrate relative to the control substrate is easily adjustable by turning the spherical bearing. With the angle of the small substrate adjusted to a required value, the spherical shaft is fixed to the bulge of the casing.
Alternatively, the second side edge of the small substrate is fixed to the inner surface of the bulge with the small substrate inclined at a predetermined angle relative to the control substrate by passing an adjusting screw through the bulge, threading the adjusting screw into the small substrate near the second side edge thereof, and fixing the adjusting screw to the bulge. With this arrangement, by adjusting the depth of penetration of the screw, it is possible to adjust the angle of the small substrate to a required value relative to the control substrate. With the angle of the small substrate adjusted, the adjusting screw is fixed to the bulge so as not to be rotatable. The adjusting screw is preferably arranged so as to be operable from outside.
Since the position and angle of the vehicle behavioral sensor are adjustable simply by changing the position and angle of the small substrate, it is not necessary to change the design of e.g. the casing of the electronic control unit to adjust the position and angle of the sensor. Thus, such adjustments can be made at a low cost.
By transmitting control signals utilizing multiplexing such as time division multiplexing, frequency division multiplexing or wavelength division multiplexing, it is possible to reduce the number of signal cables and thus the size of the connector. This in turn makes it easier to form the bulge in which the vehicle behavioral sensor is mounted, and also makes it possible to minimize the size of the vehicle control device.
Other features and objects of the present invention will become apparent from the following description made with reference to the accompanying drawings, in which:
The embodiment of
As shown in
The electronic control unit 2 includes a control substrate (main substrate) 21 mounted in the casing 20 and comprising a printed board on which various electronic parts 23 are mounted in the same manner as with conventional printed boards. The control substrate 21, as well as the casing 20, protrudes leftwardly (in
On the area 20 b of the mounting surface of the casing 20, a connector assembly 24 for the electronic control unit comprising a power source connector 24 a and a control connector 24 b (located over the connector 24 a in
The area 20 b is further formed with a bulge 25 under the connector assembly 24. In the bulge 25, a small substrate 31 is received which carries at least one vehicle behavioral sensor S. The small substrate 31 is in turn supported on the control substrate 21 so as to extend transverse to the substrate 21. The small substrate 31 may include an electronic circuit connected to the vehicle behavioral sensor S.
As shown in
Like conventional vehicle control devices, the vehicle control device according to the present invention is mounted in the engine room of a vehicle by means of brackets. Irrespective of the position of the vehicle control device and the control substrate 21 in the electronic control unit 2 relative to the vehicle, the small substrate 31 is positioned such that the at least one sensor S can detect behaviors of the vehicle with respect to the X-axis, Y-axis and/or Z-axis directions. With the small substrate 31 thus positioned, it is bonded, screwed or otherwise fixed along one side edge thereof to the main substrate 21 as shown in
The vehicle control device of this embodiment has substantially the same shape and size as any such vehicle control device having no vehicle behavioral sensor S (the vehicle control device of
In this arrangement, a pin 33 is preferably secured to the spherical bearing 26 so as to protrude from the bulge 25 of the casing 20 as shown in
In the embodiment of
As shown in
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US4812806 *||Jul 31, 1987||Mar 14, 1989||Freeman John W H||Vehicle and method of indicating attainment of maximum axle load|
|US5288141 *||Jun 18, 1992||Feb 22, 1994||Sumitomo Wiring Systems, Ltd.||Antilock brake system with integral housings for a junction block and electronic control unit|
|US6205887 *||Jun 22, 1998||Mar 27, 2001||Audi Ag||Automatic electrohydraulically controlled transmission|
|US6354674 *||Dec 10, 1999||Mar 12, 2002||Denso Corporation||Hydraulic control apparatus integrated with motor driving circuit unit|
|US6416139 *||Apr 10, 2001||Jul 9, 2002||Kelsey-Hayes Company||Vehicle brake control assembly with an integral vehicle motion sensor|
|US6634723 *||Sep 7, 2000||Oct 21, 2003||Kelsey-Hayes Company||Electro-hydraulic control unit for an electronic brake control system|
|US6678591 *||Jan 29, 2002||Jan 13, 2004||Mazda Motor Corporation||Server for remote vehicle troubleshooting and the like|
|US6799812 *||May 8, 2001||Oct 5, 2004||Continental Teves Ag & Co. Ohg||Integrated pressure sensor module|
|US6869152 *||Jan 26, 2004||Mar 22, 2005||Robert Bosch Gmbh||Hydraulic unit|
|US6908162 *||Feb 19, 2004||Jun 21, 2005||Denso Corporation||Vehicle regenerative braking apparatus|
|US6931912 *||Jun 21, 2002||Aug 23, 2005||Bridgestone Corporation||Road surface friction coefficient estimating method, signal multiplex transmission method and signal multiplex transmission device|
|US6951526 *||Dec 21, 2001||Oct 4, 2005||Zf Sachs Ag||Motor vehicle comprising a drive train having a multiple clutch drive|
|US6961649 *||Jul 16, 2004||Nov 1, 2005||Advics Co., Ltd.||Vehicle motion control apparatus|
|US7424347 *||Jan 16, 2004||Sep 9, 2008||Kelsey-Hayes Company||Motion sensors integrated within an electro-hydraulic control unit|
|US20010022469||Mar 16, 2001||Sep 20, 2001||Fumitoshi Koyama||Hydraulic actuator for an anti-lock braking system|
|US20020157502 *||Apr 4, 2002||Oct 31, 2002||Roland Albert||Electronic-hydraulic transmission control module and manufacturing method|
|US20040015282 *||Sep 7, 2001||Jan 22, 2004||Babala Mike L.||High reliability pressure sensor|
|US20040102888||Aug 21, 2001||May 27, 2004||Jochen Burgdorf||Device for regulating the dynamics of vehicle movement and a method for aligning vehicle-dynamics sensors|
|US20040160120 *||Jan 26, 2004||Aug 19, 2004||Andreas Weh||Hydraulic unit|
|US20040163470 *||Jan 16, 2004||Aug 26, 2004||Babala Michael L.||Motion sensors integrated within an electro-hydraulic control unit|
|US20050057092 *||Sep 14, 2004||Mar 17, 2005||Taro Segawa||Hydraulic pressure controller|
|US20050057093 *||Sep 15, 2004||Mar 17, 2005||Taro Segawa||Hydraulic pressure controller|
|US20050160726 *||Feb 7, 2003||Jul 28, 2005||Jan Lonn||Hydraulic system for a vehicle, a vehicle including such a hydraulic system and a suplementary unit for such a vehicle|
|US20050274192 *||May 26, 2005||Dec 15, 2005||Taro Segawa||Electromagnetic valve and mounting method thereof|
|DE10347189A1||Oct 10, 2003||May 12, 2005||Bosch Gmbh Robert||Hydraulikaggregat mit integrierter Sensorvorrichtung|
|JP2001260846A||Title not available|
|JP2004506572A||Title not available|
|JPH0811691A||Title not available|
|WO2002016179A2||Aug 21, 2001||Feb 28, 2002||Continental Teves Ag & Co. Ohg||Device for regulating the dynamics of vehicle movement and a method for aligning vehicle-dynamics sensors|
|WO2003008244A1||Jul 19, 2002||Jan 30, 2003||Kelsey-Hayes Company||Motion sensors integrated within an electro-hydraulic control unit|
|1||Official Action issued by the German Patent Office in counterpart German application, and English language translation of Official Action.|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US9215823||Mar 28, 2013||Dec 15, 2015||Hitachi Automotive Systems, Ltd.||Electronic control apparatus|
|US9278675 *||Nov 22, 2011||Mar 8, 2016||Nissin Kogyo Co., Ltd||Hydraulic control apparatus and method for manufacturing the same|
|US20080036292 *||Aug 1, 2007||Feb 14, 2008||Moriharu Sakai||Braking pressure control unit for vehicle braking system|
|US20120132837 *||May 31, 2012||Nissin Kogyo Co., Ltd.||Hydraulic control apparatus and method for manufacturing the same|
|U.S. Classification||701/83, 417/231, 180/276, 303/119.1, 701/70, 701/1, 180/271, 180/370, 303/113.2, 477/182, 180/275, 477/211, 701/82, 303/119.3|
|International Classification||B60T8/34, B60T7/12|
|Cooperative Classification||Y10T477/8936, Y10T477/80, B60T17/02, B60T8/368|
|European Classification||B60T17/02, B60T8/36F8B|
|Jun 29, 2006||AS||Assignment|
Owner name: ADVICS CO., LTD., JAPAN
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HASHIBA, HITOSHI;REEL/FRAME:018046/0293
Effective date: 20050923
Owner name: ADVICS CO., LTD.,JAPAN
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HASHIBA, HITOSHI;REEL/FRAME:018046/0293
Effective date: 20050923
|Oct 23, 2013||FPAY||Fee payment|
Year of fee payment: 4